Hi Lola,
We are also learning to make job descriptions in our college, so maybe I can share what I have learned. You can follow these steps for making the template:
1. Write the job title.
2. Write the level or grade in which the job falls.
3. Specify the age range required for that job.
4. Mention whom the person will be reporting to.
5. Include the CTC.
6. Specify education requirements.
7. Outline required work experience.
8. Detail job responsibilities.
9. List required knowledge, skills, and abilities.
If you think there are any other parameters that need to be included, feel free to add them. I am also attaching a template that I created in college. Hope it helps you! Best of luck.